JP2000063063A - Elevator hoisting winch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate manual operation in a manual operation time of an elevator hoisting winch by engaging a tooth profile formed in the axis directional end part of a sheave in the elevator hoisting winch with a small diameter tooth profile wheel in a manual hoisting winch. SOLUTION: This elevator hoisting winch is provided with an electric motor 105, a sheave 106 integrally installed to a driving shaft 104 of the motor 105, an elevator car suspending rope 107 wound on the sheave 106, an elevator hoisting winch base 101 carrying the electric motor 105 and having bearings 102, 103 supporting the driving shaft 104 in the electric motor 105, and a braking device 109 arranged on the base 101 so as to brake rotation of the sheave 106. The elevator hoisting winch is also provided with a tooth profile 108a formed in the axis directional end part of the sheave 106, a manual hoisting winch having a small diameter tooth profile wheel 111 in one end of a rotary shaft and having a handle 114 in the other end, and a bearing 115 holding a manual driving apparatus 116 so that the small diameter tooth profile wheel 111 and the tooth profile 108a formed in the axis directional end part of the sheave 106 are engaged together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator hoisting machine, and more particularly to an elevator hoisting machine equipped with a manual hoist for manually driving an elevator car during installation work or failure of the elevator.

[0002]

2. Description of the Related Art FIGS. 3 to 4 are views showing a conventional elevator hoist using a manual hoist, and FIG.
FIG. 4 is a view on arrow AA of FIG.

In these figures, 1 is a base, 2 is a motor-side bearing fixed to the base 1, 3 is a sheave side bearing fixed to the base 1, and 4 is supported by a bearing 2 and a bearing 3. Drive shaft, 5 is an electric motor, 5a is a stator of an electric motor mounted on the base 1, 5b is a rotor attached to the drive shaft 4, 6 is a sheave attached to the drive shaft 4, and 7 is a sheave. It is a rope that suspends the elevator car around the outer circumference of 6.

Reference numeral 8 is a brake disc formed by extending one end in the axial direction of the sheave 6 in the radial direction, and 9 is a brake device.
The brake disc 8 is clamped to brake the rotation of the sheave 6. Reference numeral 10 denotes a yoke, which extends from the bearing 3 and holds the brake device 9.

Reference numeral 11 is a sprocket mounting shaft formed on the drive shaft 4, and 12 is a large-diameter sprocket, which is mounted on the mounting shaft 11 in a non-rotating direction during manual operation of the elevator. 1
3 is a chain, 14 is a small-diameter sprocket, and the small-diameter sprocket 14 is a large-diameter sprocket 1 through a chain 13.
Engage with 2.

Reference numeral 15 is an attachment shaft, 16 is a lever attached to the attachment shaft 15, and 17 is a handle attached to the lever 16. The attachment shaft 15, the lever 16 and the handle 17 are integrally attached to the small diameter sprocket 14. 18
Is a bearing mounted on the base, and the bearing 18 is a mounting shaft 15
And the small diameter sprocket 14 is rotatably supported. 1
Reference numeral 9 is a manual winder including a chain 13, a small diameter sprocket 14, a mounting shaft 15, a lever 16 and a handle 17.

When the elevator is manually operated, the large diameter sprocket 12 is attached to the sprocket mounting shaft 11 formed on the end surface of the drive shaft 4. Next, the chain 13 is wound around the large diameter sprocket 12 and the small diameter sprocket 14.
When the handle 17 is manually rotated, the sheave rotates at a low speed, and the car suspended on the sheave can be moved.

[0008]

In the elevator hoisting machine using the conventional manual hoist, it is necessary to mount the large diameter sprocket 12 on the mounting shaft 11 during the manual operation. Since this work is performed manually, it is necessary to reduce the size and weight of the large-diameter sprocket within a range that can be easily handled manually.

Under these circumstances, the diameter D1 of the large diameter sprocket cannot be made sufficiently large, and the diameter is limited to about 4 to 6 times the diameter D2 of the small diameter sprocket 15. When the diameter ratio (D1 / D2) of the large diameter sprocket 12 and the small diameter sprocket 15 is set to 4 to 6, in order to rotate the handle manually against the load torque applied to the sheave. The lever length 1 requires 1 to 1.5 m.

However, it is difficult to smoothly and continuously operate such a long lever, and a lot of labor is required for hoisting the elevator.

The present invention has been made in view of the above problems, and engages a tooth profile formed at an axial end of a sheave with a small-diameter tooth profile wheel of a manual hoist to manually operate an elevator hoisting machine. An object of the present invention is to provide an elevator hoisting machine that can easily perform a manual driving operation at times.

[0012]

The present invention adopts the following means in order to solve the above problems.

An electric motor, a sheave integrally attached to a drive shaft of the electric motor, a rope for suspending an elevator car around the sheave, a rope for suspending the electric motor, and a drive shaft for the electric motor. A base of an elevator hoisting machine having a bearing to support, and an elevator hoisting machine having a braking device for braking the rotation of the sheave, and a tooth profile formed at the axial end of the sheave, A manual winder having a small-diameter toothed wheel on one end of the rotary shaft and a handle on the other end, and the manual drive to engage the small-diameter toothed wheel with a tooth profile formed on the axial end of the sheave. A bearing for holding the container is provided.

Further, an electric motor, a sheave integrally mounted on a drive shaft of the electric motor, a rope for suspending an elevator car around the sheave, a rope for suspending the electric motor, and driving the electric motor. In an elevator hoist equipped with a base of an elevator hoist equipped with a bearing for supporting a shaft and a braking device for braking the rotation of the sheave, the axial end of the sheave is outside the radial direction. Toward the brake disc and the tooth profile formed on the outer periphery of the brake disc, a manual winder having a small diameter toothed wheel at one end of the rotary shaft and a handle at the other end, the small diameter toothed wheel and A bearing for holding the manual hoist so as to engage with a tooth profile formed on the outer circumference of the brake disc of the sheave is provided.

Further, an electric motor, a sheave integrally mounted on a drive shaft of the electric motor, a rope for suspending an elevator car around the sheave, a rope for suspending the electric motor, and driving the electric motor. In an elevator hoist equipped with a base of an elevator hoist equipped with a bearing for supporting a shaft and a braking device for braking the rotation of the sheave, an axial end of the sheave is axially outward. And a tooth profile formed on the outer circumference of the brake drum, a manual winder having a small diameter toothed wheel at one end of the rotating shaft and a handle at the other end, the small diameter toothed wheel and the rope. A bearing for holding the manual hoist so as to engage with a tooth profile formed on the outer circumference of the brake disc of the vehicle is provided. Further, an electric motor, a sheave integrally attached to a drive shaft of the electric motor, a rope for suspending an elevator car around the sheave, a rope for suspending the electric motor, and supporting the drive shaft of the electric motor. In an elevator hoisting machine including a base of an elevator hoisting machine equipped with a bearing, and a braking device that brakes the rotation of the sheave, the axial end of the sheave extends radially outward. The existing brake disc and the chain tooth profile formed on the outer periphery of the brake disc, the manual winder having the small diameter chain tooth wheel at one end of the rotary shaft and the handle at the other end, the small diameter tooth wheel and the chain. A bearing is provided for holding the manual winder so as to engage with the tooth profile through the chain. In the elevator hoist, the tooth profile is cast and formed.

In the elevator hoisting machine,
The manual hoist is detachably provided.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
2 through FIG.

1 and 2 are views showing an elevator hoisting machine according to the present embodiment, FIG. 1 is a front view, and FIG. 2 is a view on arrow AA of FIG.

In the figure, 101 is a base, 102 is a bearing on the electric motor side fixed to the base 101, and 103 is the base 101.
The bearing on the side of the sheave fixed to the bearing 104, the bearings 102 and 1
03 is a drive shaft, 105 is an electric motor, 105a is a stator of the electric motor, and the stator 105a is mounted on the base 101. 105b is a rotor attached to the shaft 104, 106 is a sheave attached to the drive shaft 104,
Reference numeral 7 is a rope that suspends an elevator car that is wrapped around the outer circumference of the sheave 106.

Reference numeral 108 denotes a brake disc formed by extending one axial end of the sheave 106 in the radial direction, reference numeral 108a denotes a tooth profile formed on the outer periphery of the brake disc 108, and 109 denotes a sheave with the brake disc 108 held therebetween. A brake device for braking rotation, 110 is a yoke extending from the bearing 103 and holding the brake device 109, and 111 is a small-diameter toothed wheel that engages with the tooth profile 108a.

Reference numeral 112 is a mounting shaft for a small diameter toothed wheel, 113 is a lever mounted on the mounting shaft, 114 is a handle mounted on the lever 113, 115 is a bearing for holding the mounting shaft 112 of the small diameter toothed wheel, and 116 is a small diameter tooth profile. It is a manual winder including a vehicle 111, a mounting shaft 112, a lever 113, and a handle 114.

The bearing 115 holds the mounting shaft 112 so that the small-diameter toothed wheel 111 engages with the tooth profile formed on the outer circumference of the brake disc. The bearing 115 is detachably attached to the sheave-side bearing 103.

The brake disc 108 is formed by extending one end in the axial direction of the sheave 106 in the radial direction, and the diameter D1 of the toothed wheel formed by the tooth profile formed on the outer periphery thereof can be formed large. it can. As a result, the ratio (D1 / D2) to the diameter D2 of the small-diameter tooth wheel, that is, the reduction ratio is 7
It can be set to about 10 times. As a result, the length l of the lever 113 can be set to about 0.3 to 0.5 m, and the manual rotation operation can be easily performed.

Further, the tooth profile 108a formed on the outer periphery of the brake disc 108 and the small-diameter toothed wheel 111 are formed in a chain tooth profile, and the tooth profile 108a is formed through a chain.
And the small-diameter toothed wheel 111 can be combined.

In the above, the case where the brake disc 108 is formed by extending one end in the axial direction of the sheave in the radial direction and forming the brake disc 108 here is described. It is also possible to further extend the end in the axial direction to form a brake drum, form a tooth profile on the outer circumference of the end of the brake drum, and engage the small-diameter toothed wheel with this tooth profile.

Further, since the small-diameter toothed sheave is manually operated, the meshing speed between the tooth profile formed at one axial end of the sheave and the small-diameter toothed sheave is low. Therefore, even if the tooth profile formed at one end in the axial direction of the sheave is a tooth profile formed by cast molding, it can sufficiently withstand use, and the tooth profile can be manufactured at low cost.

If a tooth profile formed by casting is used, meshing noise may increase during operation of the electric motor operating at high speed. For this reason, it is preferable to remove the small-diameter toothed wheel 111 from the bearing 103 during operation of the electric motor.

The small-diameter toothed wheel 111 and the mounting shaft 11
2. When the manual hoisting device 116 including the lever 113 and the handle 114 is integrally detachably attached to the bearing 103 on the sheave side, not only can the motor hoisting when the electric motor is operating, but also only one manual hoisting device 11 can be used.
It is convenient because a plurality of elevator hoisting machines can be manually operated only by preparing 6.

[0029]

As described above, according to the present invention, the toothed sheave constituted by the toothing formed at the axial end of the sheave of the elevator hoisting machine is engaged with the small diameter toothed sheave of the manual hoist. It is possible to set a large ratio of the diameter of the toothed wheel formed on the axial end of the sheave and the diameter of the small diameter toothed wheel of the manual hoisting gear, that is, a reduction ratio, and to manually operate the hoisting machine for elevator during manual operation. Can be easily implemented.

[Brief description of drawings]

FIG. 1 is a diagram showing an elevator hoisting machine according to an embodiment of the present invention.

FIG. 2 is a view on arrow AA of FIG.

FIG. 3 is a view showing a conventional elevator hoisting machine.

FIG. 4 is a view on arrow AA of FIG.

[Explanation of symbols]

101 base 102 Motor side bearing 103 Sheave side bearing 104 drive shaft 105 electric motor 106 sheave 107 rope 108 brake disc 108a tooth profile 109 Brake device 110 York 111 small diameter toothed wheel 112 Small diameter toothed wheel mounting shaft 113 lever 114 handle 115 bearing 116 Manual hoist

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hideoka Matsuoka             1070 Ichimo, Hitachinaka City, Ibaraki Prefecture Stock Association             Hitachi, Ltd. Mito factory (72) Inventor Masaaki Ariga             1070 Ichimo, Hitachinaka City, Ibaraki Prefecture Stock Association             Hitachi, Ltd. Mito factory F-term (reference) 3F305 DA07                 3F306 AA01 AA02 BA25

Claims (6)

[Claims] 1. An electric motor, a sheave integrally attached to a drive shaft of the electric motor, a rope for suspending an elevator car around the sheave, and a motor for mounting the electric motor and driving the electric motor. In an elevator hoist equipped with a base of an elevator hoist equipped with a bearing for supporting a shaft and a braking device for braking the rotation of the sheave, a tooth profile formed at an axial end of the sheave. A manual hoist having a small-diameter toothed wheel on one end of the rotary shaft and a handle on the other end, and the small-diameter toothed wheel and a tooth profile formed on an axial end of the sheave so as to engage with each other. An elevator hoisting machine comprising a bearing for holding a manual driver. 2. An electric motor, a sheave integrally attached to a drive shaft of the electric motor, a rope for suspending an elevator car around the sheave, and a motor for mounting the electric motor and driving the electric motor. In an elevator hoist equipped with a base of an elevator hoist equipped with a bearing that supports a shaft, and a braking device that brakes the rotation of the sheave, the axial end of the sheave is outside the radial direction. And a tooth profile formed on the outer circumference of the brake disc, a manual winder having a small-diameter toothed wheel at one end of the rotating shaft and a handle at the other end, the small-diameter toothed wheel and the An elevator hoisting machine comprising a bearing for holding the manual hoist so as to engage with a tooth profile formed on the outer circumference of the brake disc of the sheave. 3. An electric motor, a sheave integrally attached to a drive shaft of the electric motor, a rope for suspending an elevator car around the sheave, and a motor for mounting the electric motor and driving the electric motor. In an elevator hoist equipped with a base of an elevator hoist equipped with a bearing for supporting a shaft, and a braking device for braking the rotation of the sheave, an axial end of the sheave is outside the axial direction. And a tooth profile formed on the outer circumference of the brake drum, a manual winder having a small diameter toothed wheel at one end of the rotary shaft and a handle at the other end, the small diameter toothed wheel and An elevator hoisting machine comprising a bearing for holding the manual hoist so as to engage with a tooth profile formed on the outer circumference of the brake disc of the sheave. 4. An electric motor, a sheave integrally attached to a drive shaft of the electric motor, a rope for suspending an elevator car around the sheave, and a motor for mounting the electric motor and driving the electric motor. In an elevator hoist equipped with a base of an elevator hoist equipped with a bearing that supports a shaft, and a braking device that brakes the rotation of the sheave, the axial end of the sheave is outside the radial direction. And a chain tooth profile formed on the outer circumference of the brake disc, a manual hoist having a small diameter chain tooth wheel at one end of the rotating shaft and a handle at the other end, and a small tooth profile wheel An elevator hoisting machine comprising: a bearing that holds the manual hoist so that the chain tooth profile and the chain tooth profile are engaged with each other via the chain. 5. The elevator hoisting machine according to claim 1, wherein the tooth profile is cast. 6. The elevator hoisting machine according to claim 1, wherein the manual hoisting device is detachably provided.